Device for preparing, taking and storing carbon-dioxide-free water in laboratory
By designing a laboratory device with a combination of stainless steel four-way valves, nitrogen protection is used to achieve the preparation, use and preservation of carbon dioxide-free carbon dioxide, the water quality instability and waste chemical problems caused by alkaline reagent protection in traditional methods are solved, and the problem of waste chemicals is achieved. Stable, environmentally friendly, non-carbon dioxide treatment.
Patent Information
- Application Number
- CN202421066374.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Traditional methods require alkaline reagent protection when preparing carbon dioxide without carbon dioxide, resulting in frequent reagent replacement, waste chemicals generated, and unstable water quality, making it difficult to determine the timing of replacement.
A laboratory-free carbon dioxide-free device was designed, and a four-way valve combination made of stainless steel material was used to achieve the preparation, use and storage of carbon dioxide-free carbon dioxide through nitrogen protection, and it was free from the use of alkaline reagents. It provides three working states: preparation, use and storage, and is easy to operate.
It achieves stable preparation and preservation of carbon dioxide-free water, avoids the use of alkaline reagents, does not produce waste chemicals in the process, and the water quality is stable, which is in line with the green concept.
Smart Images
Figure CN222250124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for preparing, taking and storing carbon dioxide-free water in a laboratory, belonging to the technical field of chemical experimental equipment. Background Art
[0002] Carbon dioxide-free water is a type of water commonly used in chemical laboratories, and is used for a variety of purposes such as pH determination in NMP, acid-base titration, etc. The traditional method of preparing carbon dioxide-free water is to use boiling to drive away carbon dioxide in the water and store it in a container protected by an alkaline reagent.
[0003] In recent years, there are methods to prepare carbon dioxide water by nitrogen replacement, but it still cannot be separated from the need for alkaline reagent protection. The method of protecting water by absorbing carbon dioxide with alkaline reagents requires frequent replacement of reagents, resulting in waste chemicals, and it is difficult to judge when the alkaline reagent will become ineffective. The timing of reagent replacement is not clear, resulting in unstable water quality, affecting laboratory use. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a laboratory device for preparing, taking and storing carbon dioxide-free water. The device is stable and reliable, does not require the protection of an alkaline reagent, can effectively realize the preparation, taking and storage of carbon dioxide-free water, is simple to operate, and has a good storage effect.
[0005] To achieve the above object, the utility model is implemented by adopting the following technical scheme: a laboratory device for preparing, taking and storing carbon dioxide-free water, comprising a water storage tank, a first four-way valve and a second four-way valve, wherein the water storage tank is used to store water;
[0006] The first four-way valve includes a first valve port, a second valve port, a third valve port and a fourth valve port, and the second four-way valve includes a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port;
[0007] The first valve port is connected to the water outlet, the second valve port is connected to a nitrogen source, and the nitrogen source is used to release nitrogen, the third valve port is connected to the fifth valve port, the fourth valve port is connected to the seventh valve port, the sixth valve port is connected to the top of the water storage tank through the first pipe, and the eighth valve port is connected to the bottom of the water storage tank through the second pipe.
[0008] Optionally, the device includes three working states, which are respectively preparing, taking and storing carbon dioxide-free water.
[0009] Optionally, when the working state is to prepare carbon dioxide-free water, the second valve port in the first four-way valve is connected to the third valve port, and the first valve port is connected to the fourth valve port, the sixth valve port in the second four-way valve is connected to the seventh valve port, and the fifth valve port is connected to the eighth valve port, so that nitrogen passes through the second valve port, the third valve port, the fifth valve port, and the eighth valve port in sequence, and then enters the bottom of the water storage tank through the second pipe to treat the water body, and the treated nitrogen and the carbon dioxide gas brought out pass through the first pipe, pass through the sixth valve port, the seventh valve port, the fourth valve port and the first valve port in sequence, and then are discharged from the water outlet.
[0010] Optionally, when the working state is to take carbon dioxide-free water, the second valve port in the first four-way valve is connected to the third valve port, and the first valve port is connected to the fourth valve port, the fifth valve port in the second four-way valve is connected to the sixth valve port, and the seventh valve port is connected to the eighth valve port, so that nitrogen passes through the second valve port, the third valve port, the fifth valve port, and the sixth valve port in sequence and then enters the top of the water storage tank through the first pipe, and the nitrogen gives pressure to the water body, so that the water body passes through the eighth valve port, the seventh valve port, the fourth valve port and the first valve port in sequence through the second pipe and then is discharged from the water outlet.
[0011] Optionally, when the working state is to store carbon dioxide-free water, the first valve port and the second valve port in the first four-way valve are connected, and the third valve port and the fourth valve port are connected, the fifth valve port and the sixth valve port in the second four-way valve are connected, and the seventh valve port and the eighth valve port are connected.
[0012] Optionally, the first four-way valve and the second four-way valve are made of stainless steel, and the valve ports are switched manually or automatically.
[0013] Optionally, a water replenishment port is provided on the top of the water storage tank.
[0014] Optionally, the water tank is equipped with a liquid level indicator, and the liquid level indicator is used to monitor the water level in the water tank.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] The carbon dioxide-free water preparation, taking and storage device for laboratory provided by the utility model is used for preparing, taking and storing carbon dioxide-free water. The preparation and storage of carbon dioxide-free water are both in the water storage tank. The three working states of preparation, taking and storage are switched by two four-way valves. It is easy to use, and the carbon dioxide-free storage effect is good and the property is stable.
[0017] The utility model relies on nitrogen protection throughout the whole process, gets rid of the use of alkaline reagents, and generates no waste chemicals in the process, which conforms to the green concept. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram of a laboratory device for preparing, taking and storing carbon dioxide-free water in an embodiment of the utility model in a preparation working state;
[0019] Figure 2 It is a schematic structural diagram of a laboratory device for preparing, taking and storing carbon dioxide-free water in an embodiment of the utility model in a taking working state;
[0020] Figure 3 It is a schematic structural diagram of a laboratory device for preparing, taking and storing carbon dioxide-free water in an embodiment of the utility model in a storage working state;
[0021] In the figure: 1 nitrogen source, 2 water outlet, 3 water tank, 31 water replenishment port, 4 first pipeline, 5 second pipeline, 6 first four-way valve, 7 second four-way valve, 1a first valve port, 1b second valve port, 1c third valve port, 1d fourth valve port, 2a fifth valve port, 2b sixth valve port, 2c seventh valve port, 2d eighth valve port. DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.
[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0025] The laboratory device for preparing, taking and storing carbon dioxide-free water provided by the embodiment of the utility model comprises a water storage tank 3, a first four-way valve 6 and a second four-way valve 7. The water storage tank 3 can be a pressure-resistant plastic barrel, a stainless steel or aluminum metal barrel, which is used to store water. A water replenishment port 31 is provided on the top of the water storage tank 3. The water replenishment port 31 can be conveniently provided to replenish water to the water storage tank 3 in time.
[0026] In some embodiments, the water tank 3 is equipped with a liquid level indicator, which can monitor the water level in the water tank 3. At this time, preferably, the water tank needs to be made of transparent material, and the volume range of the water tank 3 is preferably 0.5~25L, but not limited to this.
[0027] In some embodiments, the first four-way valve 6 and the second four-way valve 7 are made of stainless steel, and the switching of each valve port can be controlled manually or automatically. To manually adjust the four-way valve, the handle on the four-way valve is manually rotated to adjust the valve opening. If an electric four-way valve is used, automatic adjustment can be achieved.
[0028] The first four-way valve 6 includes a first valve port 1a, a second valve port 1b, a third valve port 1c and a fourth valve port 1d, and the second four-way valve 7 includes a fifth valve port 2a, a sixth valve port 2b, a seventh valve port 2c and an eighth valve port 2d. The first valve port 1a is connected to the water outlet 2, and the second valve port 1b is connected to the nitrogen source 1, which is used to release nitrogen. The first four-way valve 6 and the second four-way valve 7 are connected by a pipeline. Specifically, the third valve port 1c is connected to the fifth valve port 2a, and the fourth valve port 1d is connected to the seventh valve port 2c. The sixth valve port 2b is connected to the top of the water storage tank 3 through the first pipeline 4, and the eighth valve port 2d is connected to the bottom of the water storage tank 3 through the second pipeline 5.
[0029] Based on the above device structure, by switching the connection of the internal valve ports of the first four-way valve 6 and the second four-way valve 7, three working states of preparing, taking and storing carbon dioxide-free water can be achieved. Example
[0030] like Figure 1 As shown, when in the working state of preparing carbon dioxide-free water, the second valve port 1b in the first four-way valve 6 is connected to the third valve port 1c, and the first valve port 1a is connected to the fourth valve port 1d, the sixth valve port 2b in the second four-way valve 1b is connected to the seventh valve port 2c, and the fifth valve port 2a is connected to the eighth valve port 2d,
[0031] The specific operation is as follows: water is added into the water storage tank 3 from the water replenishment port 31, and the water at this time is water containing carbon dioxide. The nitrogen source 1 is turned on, and the nitrogen passes through the first valve port 1a, the third valve port 1c, the fifth valve port 2a and the eighth valve port 2d in sequence, and then enters the bottom of the water storage tank 3 through the second pipe 5. The nitrogen contacts the water and starts bubbling. The bubbling nitrogen and the carbon dioxide gas brought out rise and move to the inner top of the water storage tank 3, and enter the sixth valve port 2b, the seventh valve port 2c, the fourth valve port 2d and the first valve port 1a in sequence through the first pipe 4, and finally discharged from the water outlet 2. After a suitable period of bubbling operation, the preparation of carbon dioxide-free water is completed. Example
[0032] like Figure 2 As shown, when in the working state of taking carbon dioxide-free water, the second valve port 1b in the first four-way valve 6 is connected to the third valve port 1c, and the first valve port 1a is connected to the fourth valve port 1d, the fifth valve port 2a in the second four-way valve 7 is connected to the sixth valve port 2b, and the seventh valve port 2c is connected to the eighth valve port 2d.
[0033] The specific operation is as follows: open the nitrogen source 1, and the nitrogen passes through the second valve port 1b, the third valve port 1c, the fifth valve port 2a, and the sixth valve port 2b in sequence, and then reaches the top of the water storage tank 3 through the first pipeline 4. The nitrogen gives downward pressure to the water body, so that the water body passes through the eighth valve port 2d, the seventh valve port 2c, the fourth valve port 1d and the first valve port 1a in sequence from the second pipeline 5, and finally is discharged from the water outlet 2 for use in chemical experiments. Nitrogen is supplemented during the entire water intake process, so that the water in the water storage tank 3 can be well protected. Example
[0034] like Figure 3 As shown, when in the working state of storing carbon dioxide-free water, the first valve port 1a and the second valve port 1b in the first four-way valve 6 are connected, and the third valve port 1c and the fourth valve port 1d are connected, and the fifth valve port 2a and the sixth valve port 2b, and the seventh valve port 2c and the eighth valve port 2d in the second four-way valve 7 are connected.
[0035] Except for the water outlet 2, the entire water storage tank 3 and the pipeline system are completely sealed under nitrogen, and the carbon dioxide-free water is best protected. At the same time, since the first valve port 1a and the second valve port 1b are connected at this time, the water outlet 2 pipeline can be blown dry by nitrogen to prevent pollution caused by the next water use and prepare for the next water use.
[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A laboratory device for preparing, taking and storing carbon dioxide-free water, characterized in that: It comprises a water storage tank, a first four-way valve and a second four-way valve, wherein the water storage tank is used to store water; The first four-way valve includes a first valve port, a second valve port, a third valve port and a fourth valve port, and the second four-way valve includes a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port; The first valve port is connected to the water outlet, the second valve port is connected to a nitrogen source, and the nitrogen source is used to release nitrogen, the third valve port is connected to the fifth valve port, the fourth valve port is connected to the seventh valve port, the sixth valve port is connected to the top of the water storage tank through the first pipe, and the eighth valve port is connected to the bottom of the water storage tank through the second pipe.
2. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 1, characterized in that: The device comprises three working states, which are respectively preparing, taking and storing carbon dioxide-free water.
3. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 2, characterized in that: When the working state is to prepare carbon dioxide-free water, the second valve port in the first four-way valve is connected to the third valve port, and the first valve port is connected to the fourth valve port, the sixth valve port in the second four-way valve is connected to the seventh valve port, and the fifth valve port is connected to the eighth valve port, so that nitrogen passes through the second valve port, the third valve port, the fifth valve port, and the eighth valve port in sequence, and then enters the bottom of the water storage tank through the second pipeline to treat the water body, and the treated nitrogen and the carbon dioxide gas brought out pass through the first pipeline, pass through the sixth valve port, the seventh valve port, the fourth valve port and the first valve port in sequence, and then are discharged from the water outlet.
4. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 2, characterized in that: When the working state is to take carbon dioxide-free water, the second valve port in the first four-way valve is connected to the third valve port, and the first valve port is connected to the fourth valve port, the fifth valve port in the second four-way valve is connected to the sixth valve port, and the seventh valve port is connected to the eighth valve port, so that nitrogen passes through the second valve port, the third valve port, the fifth valve port, and the sixth valve port in sequence, and then enters the top of the water storage tank through the first pipeline, and the nitrogen gives pressure to the water body, so that the water body passes through the eighth valve port, the seventh valve port, the fourth valve port and the first valve port in sequence through the second pipeline and then is discharged from the water outlet.
5. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 2, characterized in that: When the working state is to store carbon dioxide-free water, the first valve port and the second valve port in the first four-way valve are connected, and the third valve port and the fourth valve port are connected, the fifth valve port and the sixth valve port in the second four-way valve are connected, and the seventh valve port and the eighth valve port are connected.
6. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 1, characterized in that: The first four-way valve and the second four-way valve are made of stainless steel, and the valve ports are switched manually or automatically.
7. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 1, characterized in that: A water replenishment port is arranged on the top of the water storage tank.
8. The device for preparing, taking and storing carbon dioxide-free water for laboratory use according to claim 7, characterized in that: The water storage tank is equipped with a liquid level indicator, and the liquid level indicator is used to monitor the water level in the water storage tank.